Date: December 9, 2016 Aim #31: How are plants adapted to perform photosynthesis? HW: Daily Review of class notes. Test corrections due Monday Do Now: State the relationship between light intensity and amount of photosynthesis? State the relationship between carbon dioxide concentration and amount of photosynthesis? Draw a graph that represents both relationships. Why do prolonged high temperatures decrease photosynthesis?

Aim: How are plants adapted to perform photosynthesis?

How are we adapted for heterotrophic nutrition?

1) Where does photosynthesis happen?

Where in the leaf does photosynthesis happen? Cuticle Keeps moisture Palisade Photosynthetic cells Absorb light Spongy layer Photosynthetic cells Allow gas passage

2) How are materials transported?

How do H2O and nutrients get into the plant?

TRANSPORTS WATER TO LEAF Xylem TRANSPORTS WATER TO LEAF Transpiration- evaporation of water from leaves

3) What path does water takes through a plant? Into roots Through xylem To leaves Out through stomates when guard cells are open

4) What is transpiration? Evaporation of water off of leaves

TRANSPORTS NUTRIENTS FROM… Phloem TRANSPORTS NUTRIENTS FROM… The leaf to the roots.

5) How does CO2 get inside the leaf? GUARD CELLS OPEN STOMATES

Should the stomates always be open? WATER VAPOR

6) What happens if they are always open? Too much water will exit and the plant will wilt.

7) When should the guard cells close the ________? stomates Dry Sunny day

8) The Guard Cells maintain _______ in homeostasis. WATER Dry Sunny day Humid day

9) When stomates are open they let in ________and let out _______. CO2 O2

10) Which illustration below demonstrates a leaf on a hot, humid day? Why?